Powder coating process with tribostatically charged...

B - Operations – Transporting – 05 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B05C 19/02 (2006.01) B05D 1/24 (2006.01) B05D 1/00 (2006.01)

Patent

CA 2449847

A process for forming a coating on a conductive substrate, including the steps of: establishing a fluidised-bed of a powder coating composition, thereby effecting tribostatic charging of the powder coating composition, the fluidised-bed including a fluidising chamber at least a part of which is conductive, applying a voltage to the conductive part of the fluidising chamber, immersing the substrate wholly or partly in the fluidised bed, whereby charged particles of the powder coating composition adhere to the substrate, the substrate being either electrically isolated or earthed, withdrawing the substrate from the fluidised-bed and forming the adherent particles into a continuous coating over at least part of the substrate. The process offers advantages in terms of coating substrate areas which, because of the Faraday cage effect, are incaccessible in conventional electrostatic powder coating processes, and also enables the formation of thinner coatings than are obtainable by conventional fluidised-bed processes. Further advantages include uniformity and speed of coating.

La présente invention concerne un procédé de formation d'un revêtement sur un substrat conducteur. Ledit procédé consiste à: établir un lit fluidisé d'une composition de revêtement en poudre, effectuant ainsi un chargement tribostatique de la composition de revêtement en poudre, le lit fluidisé comprenant une chambre de fluidisation dont au moins une partie est conductrice, appliquer une tension sur la partie conductrice de la chambre de fluidisation, immerger le substrat entièrement ou partiellement dans le lit fluidisé, les particules chargées de la composition de revêtement en poudre adhérant ainsi au substrat, le substrat étant électriquement isolé ou mis à la terre, retirer le substrat du lit fluidisé et former les particules adhérentes en un revêtement continu sur au moins une partie du substrat. Ledit procédé permet l'application de revêtement sur des surfaces de substrat qui, à cause de l'effet de cage de Faraday, ne se prêtent pas à des procédés électrostatiques classiques de revêtement en poudre, et permet également la formation de couches plus minces que celles qui peuvent être obtenues avec des procédés de lit fluidisé classiques. L'uniformité et la vitesse d'application de revêtement constituent d'autres avantages.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Powder coating process with tribostatically charged... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Powder coating process with tribostatically charged..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Powder coating process with tribostatically charged... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1921505

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.